Course Enrollment Component

Overview

The Course Enrollment component (Matricula.java) provides an interactive interface for students to select courses, manage their schedule, and complete enrollment. It features dynamic table updates, course selection dropdowns, and comprehensive enrollment management.

Component Architecture

Core Structure

Matricula.java

public final class Matricula extends javax.swing.JFrame {
    private Login log;
    
    ArrayList<Cursos> listaCursos = new ArrayList<>();
    DefaultTableModel modelo = new DefaultTableModel();
  
    public Matricula() {
        initComponents();
        modelo = new DefaultTableModel();
        modelo.addColumn("Cursos");
        refrescarTabla();
    }
}

The component uses an ArrayList to store course selections and a DefaultTableModel for dynamic table rendering.

Data Model

Course Model (Cursos)

The Cursos class represents a student’s course selection:

Cursos.java

public class Cursos {
    String matematica, historia, ciencias, literatura, civica;
    
    public Cursos() {}
    
    public Cursos(String matematica, String historia, String ciencias, 
                  String literatura, String civica) {
        this.matematica = matematica;
        this.historia = historia;
        this.ciencias = ciencias;
        this.literatura = literatura;
        this.civica = civica;
    }

    // Getters and setters for each course field
    public String getMatematica() { return matematica; }
    public void setMatematica(String matematica) { this.matematica = matematica; }
    
    public String getHistoria() { return historia; }
    public void setHistoria(String historia) { this.historia = historia; }
    
    public String getCiencias() { return ciencias; }
    public void setCiencias(String ciencias) { this.ciencias = ciencias; }
    
    public String getLiteratura() { return literatura; }
    public void setLiteratura(String literatura) { this.literatura = literatura; }
    
    public String getCivica() { return civica; }
    public void setCivica(String civica) { this.civica = civica; }
}

Course Selection Interface

Available Courses

The system offers five subject areas, each with multiple section options:

Mathematics

Four different sections with varying professors, rooms, and schedules

scrMatematica.setModel(new javax.swing.DefaultComboBoxModel<>(new String[] { 
    "Ninguno", 
    "Matematica| Prof. Raúl Hernandez  | A0504  | Lun y Mie  2:00pm a 4:00pm", 
    "Matematica| Prof. Javier Paucar   | A0307  | Mar y Jue  2:00pm a 4:00pm", 
    "Matematica| Prof. Amanda Ruiz     | B0603  | Lun y Mie  4:30pm a 6:30pm", 
    "Matematica| Prof. Jose Romero     | C0504  | Mar y Jue  4:30pm a 6:30pm" 
}));

History of Peru

Four sections covering different time slots

scrHistoria.setModel(new javax.swing.DefaultComboBoxModel<>(new String[] { 
    "Ninguno", 
    "Historia| Prof. Marisol Mercede | A0304  | Lun  10:00am a 1:00pm", 
    "Historia| Prof. Carlos Alberto  | A0105  | Jue   9:00am a 11:00pm", 
    "Historia| Prof. Luis Campos     | B0503  | Mie   1:00pm a 4:00pm", 
    "Historia| Prof. Juan Lopez      | C0704  | Mar  5:00pm a 8:00pm" 
}));

Literature

Four literature sections with varied schedules

scrLiteratura.setModel(new javax.swing.DefaultComboBoxModel<>(new String[] { 
    "Ninguno", 
    "Literat| Prof. Mario de Valle  | A0107  | Mar y Sab  8:00am a 9:30am", 
    "Literat| Prof. Sara Ordoñez    | C0405  | Lun y Vier  9:00am a 10:30am", 
    "Literat| Prof. Mario Lopez     | A403   | Lun y Mar  10:30am a 11:30am", 
    "Literat| Prof. Renato Arevalo  | C0202  | Mar y Mier  11:00am a 1:30pm" 
}));

Civics

Four civics sections, mostly single-day meetings

scrCivica.setModel(new javax.swing.DefaultComboBoxModel<>(new String[] { 
    "Ninguno", 
    "Civica| Prof. Carmela Calderon | B0102  | Lun 8:00pm a 9:00pm", 
    "Civica| Prof. Percy Coronel    | A0804  | Mar 5:00pm a 6:00pm", 
    "Civica| Prof. Antonio Lima     | B0709  | Sab 9:00am a 10:00am", 
    "Civica| Prof. Solano Ventura   | C0502  | Vier 10:00am a 11:00am" 
}));

Sciences

Four science sections across the week

scrCiencias.setModel(new javax.swing.DefaultComboBoxModel<>(new String[] { 
    "Ninguno", 
    "Ciencias| Prof. Victoria Dueñas | D0405 | Mier 1:00pm a 3:00pm", 
    "Ciencias| Prof. Oscar Orihuela  | B0305 | Jue 8:00am a 10:00am", 
    "Ciencias| Prof. Hernan Rios     | B0107 | Jue 11:30am a 1:30pm", 
    "Ciencias| Prof. Lidia Toscano   | A0804 | Jue 6:00pm a 8:00pm" 
}));

Each course dropdown includes “Ninguno” (None) as the first option, allowing students to skip courses they don’t want to enroll in.

Adding Courses to Enrollment

Course Addition Logic

When students click “Agregar cursos” (Add courses), their selections are captured:

Matricula.java:413-422

private void btnMatematicasActionPerformed(java.awt.event.ActionEvent evt) {
    Cursos curso = new Cursos();
    curso.setMatematica(scrMatematica.getSelectedItem().toString());
    curso.setHistoria(scrHistoria.getSelectedItem().toString());
    curso.setLiteratura(scrLiteratura.getSelectedItem().toString());
    curso.setCivica(scrCivica.getSelectedItem().toString());
    curso.setCiencias(scrCiencias.getSelectedItem().toString());
    listaCursos.add(curso);
    refrescarTabla();
}

Course Addition Process

Create Course Object: Instantiate a new Cursos object
Capture Selections: Extract selected items from each ComboBox
Populate Object: Set each field using the selected course information
Add to List: Append the course object to listaCursos ArrayList
Refresh Display: Call refrescarTabla() to update the enrollment table

Table Management

Dynamic Table Refresh

The refrescarTabla() method updates the enrollment table with current selections:

Matricula.java:368-390

public void refrescarTabla() {
    for (Cursos curso : listaCursos) {
        Object a[] = new Object[1];
        
        a[0] = curso.getMatematica();
        modelo.addRow(a);
        
        a[0] = curso.getHistoria();
        modelo.addRow(a);
        
        a[0] = curso.getLiteratura();
        modelo.addRow(a);
        
        a[0] = curso.getCivica();
        modelo.addRow(a);
        
        a[0] = curso.getCiencias();
        modelo.addRow(a);
    }
    
    tblMatricula.setModel(modelo);
}

This method adds all courses from each Cursos object as separate rows, meaning each course addition creates 5 table rows (one per subject).

Table Initialization

The table model is configured during component initialization:

modelo = new DefaultTableModel();
modelo.addColumn("Cursos");
tblMatricula.setModel(modelo);

Table Styling

tblMatricula.setBackground(new java.awt.Color(0, 204, 204));
tblMatricula.setForeground(new java.awt.Color(0, 0, 0));

Enrollment Management Operations

Delete Selected Row

Students can remove individual course entries:

Matricula.java:424-431

private void btnEliminar_filaActionPerformed(java.awt.event.ActionEvent evt) {
    int fila = tblMatricula.getSelectedRow();
    if (fila >= 0) {
        modelo.removeRow(fila);
    } else {
        JOptionPane.showMessageDialog(null, "Seleccionar Fila");
    }
}

The system provides feedback if no row is selected, prompting the user to select a row first.

Clear All Courses

The “Eliminar todo” (Delete all) button removes all courses from the table:

Matricula.java:433-438

private void btnEliminar_todoActionPerformed(java.awt.event.ActionEvent evt) {
    int fila = tblMatricula.getRowCount();
    for (int i = fila - 1; i >= 0; i--) {
        modelo.removeRow(i);
    }
}

The loop iterates backwards from the last row to avoid index shifting issues during deletion.

Enrollment Completion

Finalize Enrollment

When students complete their course selection:

Matricula.java:447-449

private void btnRegistrarActionPerformed(java.awt.event.ActionEvent evt) {
    JOptionPane.showMessageDialog(null, "MATRICULA COMPLETADA");
}

The current implementation displays a success message. In a production system, this would persist enrollment data to a database.

Students can return to the login screen:

Matricula.java:440-445

private void btnVolver_loginActionPerformed(java.awt.event.ActionEvent evt) {
    log.setMatri(this);
    log.setVisible(true);
    log.setLocationRelativeTo(null);
    this.setVisible(false);
}

Component References

public void setLog(Login log) {
    this.log = log;
}

User Interface Elements

Form Labels

Clear instructions guide the enrollment process:

jLabel1.setFont(new java.awt.Font("Segoe UI", 1, 24));
jLabel1.setForeground(new java.awt.Color(255, 255, 255));
jLabel1.setText("Matricula");

jLabel2.setText("Elige los cursos que llevaras este ciclo:");
jLabel3.setText("Cuando elijas tus cursos, dale click al botón matricula.");

Course Labels

Each subject has a bold, prominent label:

jLabel4.setFont(new java.awt.Font("Segoe UI Black", 1, 18));
jLabel4.setForeground(new java.awt.Color(255, 255, 255));
jLabel4.setText("-Matemática:");

jLabel5.setText("-Historia del Perú:");
jLabel6.setText("-Literatura:");
jLabel7.setText("-Civica:");
jLabel8.setText("-Ciencias:");

Button Configuration

btnMatematicas.setBackground(new java.awt.Color(0, 153, 153));
btnMatematicas.setFont(new java.awt.Font("Segoe UI", 1, 14));
btnMatematicas.setForeground(new java.awt.Color(255, 255, 255));
btnMatematicas.setText("Agregar cursos");

Enrollment Workflow

Course Selection

Student selects desired sections from each of the five subject dropdowns

Add to Cart

Clicking “Agregar cursos” adds all selections to the enrollment table

Review Selection

Student reviews courses in the table, can delete individual rows or clear all

Finalize

Clicking “Matricula” confirms enrollment and displays success message

Key Features

Multiple Sections

Each course offers 4 different sections with unique schedules

Dynamic Table

Real-time table updates as courses are added or removed

Flexible Management

Delete individual rows or clear all courses at once

Visual Feedback

Dialog messages confirm enrollment and guide user actions

Course Information Structure

Each course listing includes:

Course Name

string

Subject name (Matematica, Historia, Literatura, Civica, Ciencias)

Professor

string

Instructor name with title (Prof.)

Room

string

Classroom location code (e.g., A0504, B0603)

Schedule

string

Meeting days and times (e.g., “Lun y Mie 2:00pm a 4:00pm”)

Student Management - Initial registration process
Authentication - Login required before enrollment

Getting Started

Architecture

Components

Development

Course Enrollment Component

Overview

Component Architecture

Core Structure

Data Model

Course Model (Cursos)

Course Selection Interface

Available Courses

Adding Courses to Enrollment

Course Addition Logic

Table Management

Dynamic Table Refresh

Table Initialization

Table Styling

Enrollment Management Operations

Delete Selected Row

Clear All Courses

Enrollment Completion

Finalize Enrollment

Navigation Controls

Component References

User Interface Elements

Form Labels

Course Labels

Button Configuration

Enrollment Workflow

Key Features

Multiple Sections

Dynamic Table

Flexible Management

Visual Feedback

Course Information Structure

Build docs developers (and LLMs) love

Getting Started

Architecture

Components

Development

​Overview

​Component Architecture

​Core Structure

​Data Model

​Course Model (Cursos)

​Course Selection Interface

​Available Courses

​Adding Courses to Enrollment

​Course Addition Logic

​Table Management

​Dynamic Table Refresh

​Table Initialization

​Table Styling

​Enrollment Management Operations

​Delete Selected Row

​Clear All Courses

​Enrollment Completion

​Finalize Enrollment

​Navigation Controls

​Return to Login

​Component References

​User Interface Elements

​Form Labels

​Course Labels

​Button Configuration

​Enrollment Workflow

​Key Features

Multiple Sections

Dynamic Table

Flexible Management

Visual Feedback

​Course Information Structure

​Related Components

Build docs developers (and LLMs) love

Overview

Component Architecture

Core Structure

Data Model

Course Model (Cursos)

Course Selection Interface

Available Courses

Adding Courses to Enrollment

Course Addition Logic

Table Management

Dynamic Table Refresh

Table Initialization

Table Styling

Enrollment Management Operations

Delete Selected Row

Clear All Courses

Enrollment Completion

Finalize Enrollment

Navigation Controls

Return to Login

Component References

User Interface Elements

Form Labels

Course Labels

Button Configuration

Enrollment Workflow

Key Features

Course Information Structure

Related Components